20184889720

素因数分解:

$2^3\times 5^1\times {\mathrm{29}}^1\times {\mathrm{37}}^1\times {\mathrm{43}}^1\times {\mathrm{10937}}^1$

素因数の和:11057

約数の個数: 128

約数和(自身を含む): 49378507200

約数和(自身を除く): 29193617480

約数列:

[1, 2, 4, 5, 8, 10, 20, 29, 37, 40, 43, 58, 74, 86, 116, 145, 148, 172, 185, 215, 232, 290, 296, 344, 370, 430, 580, 740, 860, 1073, 1160, 1247, 1480, 1591, 1720, 2146, 2494, 3182, 4292, 4988, 5365, 6235, 6364, 7955, 8584, 9976, 10730, 10937, 12470, 12728, 15910, 21460, 21874, 24940, 31820, 42920, 43748, 46139, 49880, 54685, 63640, 87496, 92278, 109370, 184556, 218740, 230695, 317173, 369112, 404669, 437480, 461390, 470291, 634346, 809338, 922780, 940582, 1268692, 1585865, 1618676, 1845560, 1881164, 2023345, 2351455, 2537384, 3171730, 3237352, 3762328, 4046690, 4702910, 6343460, 8093380, 9405820, 11735401, 12686920, 13638439, 16186760, 17400767, 18811640, 23470802, 27276878, 34801534, 46941604, 54553756, 58677005, 68192195, 69603068, 87003835, 93883208, 109107512, 117354010, 136384390, 139206136, 174007670, 234708020, 272768780, 348015340, 469416040, 504622243, 545537560, 696030680, 1009244486, 2018488972, 2523111215, 4036977944, 5046222430, 10092444860, 20184889720]

約数ペア:

[(1, 20184889720), (2, 10092444860), (4, 5046222430), (5, 4036977944), (8, 2523111215), (10, 2018488972), (20, 1009244486), (29, 696030680), (37, 545537560), (40, 504622243), (43, 469416040), (58, 348015340), (74, 272768780), (86, 234708020), (116, 174007670), (145, 139206136), (148, 136384390), (172, 117354010), (185, 109107512), (215, 93883208), (232, 87003835), (290, 69603068), (296, 68192195), (344, 58677005), (370, 54553756), (430, 46941604), (580, 34801534), (740, 27276878), (860, 23470802), (1073, 18811640), (1160, 17400767), (1247, 16186760), (1480, 13638439), (1591, 12686920), (1720, 11735401), (2146, 9405820), (2494, 8093380), (3182, 6343460), (4292, 4702910), (4988, 4046690), (5365, 3762328), (6235, 3237352), (6364, 3171730), (7955, 2537384), (8584, 2351455), (9976, 2023345), (10730, 1881164), (10937, 1845560), (12470, 1618676), (12728, 1585865), (15910, 1268692), (21460, 940582), (21874, 922780), (24940, 809338), (31820, 634346), (42920, 470291), (43748, 461390), (46139, 437480), (49880, 404669), (54685, 369112), (63640, 317173), (87496, 230695), (92278, 218740), (109370, 184556)]